Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quando houve uma taxa de desenvolvimento de £4,92?
 ###Tabelas: CREATE TABLE comparison_of_cad_cam_cae_file_viewers (comparison_of_cad_cam_cae_file_viewers_id AUTO_INCREMENT PRIMARY KEY, Latest stable release VARCHAR, Developer VARCHAR, 3D support? VARCHAR, Runs on POSIX style systems ? VARCHAR, Runs on Windows? VARCHAR, User Interface Language(s) VARCHAR) CREATE TABLE relegation_round (relegation_round_id AUTO_INCREMENT PRIMARY KEY, Position INT, Name VARCHAR, Played INT, Drawn INT, Lost INT, Points INT) CREATE TABLE 2012_calendar_year_ratios_of_crime_per_100000_population (2012_calendar_year_ratios_of_crime_per_100000_population_id AUTO_INCREMENT PRIMARY KEY, State VARCHAR, City VARCHAR, Population INT, Violent Crime VARCHAR, Murder and Non-Negligent Manslaughter VARCHAR, Forcible Rape VARCHAR, Robbery VARCHAR, Aggravated Assault VARCHAR, Property Crime VARCHAR, Burglary VARCHAR, Larceny-Theft VARCHAR, Motor Vehicle Theft VARCHAR) CREATE TABLE current_and_past_rates (current_and_past_rates_id AUTO_INCREMENT PRIMARY KEY, From VARCHAR, Adult Rate VARCHAR, Development Rate VARCHAR, 16-17 Year Olds Rate VARCHAR, Apprentice Rate VARCHAR) CREATE TABLE general_classification (general_classification_id AUTO_INCREMENT PRIMARY KEY, Cyclist VARCHAR, Nation VARCHAR, Team VARCHAR, Time VARCHAR, UCI ProTour Points INT)  
SELECT From FROM current_and_past_rates WHERE Development Rate = £4.92